source: trunk/src/gcc/libjava/java/rmi/server/RemoteObject.java@ 2

/*
  Copyright (c) 1996, 1997, 1998, 1999 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.
 
GNU Classpath is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
conditions of the GNU General Public License cover the whole
combination.

As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
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independent module, the terms and conditions of the license of that
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or based on this library.  If you modify this library, you may extend
this exception to your version of the library, but you are not
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exception statement from your version. */

package java.rmi.server;

import java.io.Serializable;
import java.rmi.Remote;
import java.rmi.NoSuchObjectException;
import java.rmi.UnmarshalException;
import java.rmi.server.RemoteRef;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.IOException;
import java.lang.ClassNotFoundException;
import java.lang.InstantiationException;
import java.lang.IllegalAccessException;

public abstract class RemoteObject
        implements Remote, Serializable {

public static final long serialVersionUID = -3215090123894869218l;

protected transient RemoteRef ref;

protected RemoteObject() {
        this(null);
}

protected RemoteObject(RemoteRef newref) {
        ref = newref;
}

public RemoteRef getRef() {
        return (ref);
}

public static Remote toStub(Remote obj) throws NoSuchObjectException {
        throw new Error("Not implemented");
}

public int hashCode() {
        if (ref == null) {
                return (0);
        }
        else {
                return (ref.hashCode());
        }
}

public boolean equals(Object obj) {
        // We only compare references.
        return (this == obj);
}

public String toString() {
        return (ref.toString());
}

private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
        String cname = in.readUTF();
        if (!cname.equals("")) {
                cname = RemoteRef.packagePrefix + '.' + cname;
                try {
                        Class cls = Class.forName(cname);
                        ref = (RemoteRef)cls.newInstance();
                }
                catch (InstantiationException e1) {
                        throw new UnmarshalException("failed to create ref");
                }
                catch (IllegalAccessException e2) {
                        throw new UnmarshalException("failed to create ref");
                }
                ref.readExternal(in);
        }
        else {
                ref = (RemoteRef)in.readObject();
        }
}

private void writeObject(ObjectOutputStream out) throws IOException, ClassNotFoundException {
        if (ref == null) {
                throw new UnmarshalException("no ref to serialize");
        }
        String cname = ref.getRefClass(out);
        if (cname != null && cname.length() > 0) {
                out.writeUTF(cname);
                ref.writeExternal(out);
        }
        else {
                out.writeUTF("");
                out.writeObject(ref);
        }
}

}